Remove Python 2.7 support

.github/workflows/build_pex.yml

@@ -15,12 +15,14 @@ jobs:
   build_pex:
     name: Build PEX
     runs-on: ubuntu-20.04
-    container:
-      image: python:2.7.18-buster
     outputs:
       pex-file-name: ${{ steps.get-pex-filename.outputs.pex-file-name }}
     steps:
     - uses: actions/checkout@v4
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.6
     - uses: actions/cache@v3
       with:
         path: ~/.cache/pip

.github/workflows/build_whl.yml

@@ -14,30 +14,26 @@ jobs:
   build_whl:
     name: Build WHL
     runs-on: ubuntu-20.04
-    container:
-      image: python:2.7.18-buster
     outputs:
       whl-file-name: ${{ steps.get-whl-filename.outputs.whl-file-name }}
       tar-file-name: ${{ steps.get-tar-filename.outputs.tar-file-name }}
     steps:
-    - name: Install Git LFS
-      run: |
-        curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash
-        apt-get install git-lfs
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
         lfs: true
     - name: Install Ubuntu dependencies
       run: |
-        apt-get -y -qq update
-        apt-get install -y gettext sudo
+        sudo apt-get -y -qq update
+        sudo apt-get install -y gettext
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v4
+      with:
+        python-version: 3.6
     - name: Use Node.js
       uses: actions/setup-node@v4
       with:
         node-version: '16.x'
-    - name: Install Yarn
-      run: npm install -g yarn
     - name: Get yarn cache directory path
       id: yarn-cache-dir-path
       run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT

.github/workflows/c_extensions.yml

@@ -28,13 +28,11 @@ jobs:
     needs: pre_job
     if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
     runs-on: ubuntu-20.04
-    container:
-      image: python:2.7.18-buster
-    defaults:
-      run:
-        shell: bash
     steps:
     - uses: actions/checkout@v4
+    - uses: actions/setup-python@v4
+      with:
+        python-version: 3.6
     - name: pip cache
       uses: actions/cache@v3
       with:
@@ -54,27 +52,25 @@ jobs:
         # in the kolibri directory
         python -m compileall -q kolibri -x py2only
         # Until we have staged builds, we will be running this in each and every
-        # environment even though builds should be done in Py 2.7
+        # environment even though builds should be done in Py 3.6
         make staticdeps
         make staticdeps-cext
         pip install .
-        # Start and stop kolibri - disabled until we can move out of a container
-        # kolibri start --port=8081
-        # kolibri stop
+        # Start and stop kolibri
+        coverage run -p kolibri start --port=8081
+        coverage run -p kolibri stop
         # Run just tests in test/
         py.test --cov=kolibri --cov-report= --cov-append --color=no test/
   no_c_ext:
     name: No C Extensions
     needs: pre_job
     if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
     runs-on: ubuntu-20.04
-    container:
-      image: python:2.7.18-buster
-    defaults:
-      run:
-        shell: bash
     steps:
     - uses: actions/checkout@v4
+    - uses: actions/setup-python@v4
+      with:
+        python-version: 3.6
     - name: pip cache
       uses: actions/cache@v3
       with:
@@ -94,11 +90,11 @@ jobs:
         # in the kolibri directory
         python -m compileall -q kolibri -x py2only
         # Until we have staged builds, we will be running this in each and every
-        # environment even though builds should be done in Py 2.7
+        # environment even though builds should be done in Py 3.6
         make staticdeps
         pip install .
-        # Start and stop kolibri - disabled until we can move out of a container
-        # kolibri start --port=8081
-        # kolibri stop
+        # Start and stop kolibri
+        coverage run -p kolibri start --port=8081
+        coverage run -p kolibri stop
         # Run just tests in test/
         py.test --cov=kolibri --cov-report= --cov-append --color=no test/

.github/workflows/tox.yml

@@ -53,28 +53,6 @@ jobs:
     - name: Test with tox
       if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
       run: tox -e py${{ matrix.python-version }}
-  unit_test27:
-    name: Python unit tests (2.7)
-    needs: pre_job
-    runs-on: ubuntu-20.04
-    container:
-      image: python:2.7.18-buster
-    steps:
-    - uses: actions/checkout@v4
-    - name: Install tox
-      if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
-      run: |
-        python -m pip install --upgrade pip
-        pip install "tox<4"
-    - name: tox env cache
-      if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
-      uses: actions/cache@v3
-      with:
-        path: ${{ github.workspace }}/.tox/py2.7
-        key: ${{ runner.os }}-tox-py2.7-${{ hashFiles('requirements/*.txt') }}
-    - name: Test with tox
-      if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
-      run: tox -e py2.7
   postgres:
     name: Python postgres unit tests
     needs: pre_job

Makefile

@@ -1,7 +1,7 @@
 SHELL := /bin/bash
 
 # List most target names as 'PHONY' to prevent Make from thinking it will be creating a file of the same name
-.PHONY: help clean clean-assets clean-build clean-pyc clean-docs lint test test-all assets coverage docs release test-namespaced-packages staticdeps staticdeps-cext writeversion setrequirements buildconfig pex i18n-extract-frontend i18n-extract-backend i18n-transfer-context i18n-extract i18n-django-compilemessages i18n-upload i18n-pretranslate i18n-pretranslate-approve-all i18n-download i18n-regenerate-fonts i18n-stats i18n-install-font i18n-download-translations i18n-download-glossary i18n-upload-glossary docker-whl docker-demoserver docker-devserver docker-envlist
+.PHONY: help clean clean-assets clean-build clean-pyc clean-docs lint test test-all assets coverage docs release staticdeps staticdeps-cext writeversion setrequirements buildconfig pex i18n-extract-frontend i18n-extract-backend i18n-transfer-context i18n-extract i18n-django-compilemessages i18n-upload i18n-pretranslate i18n-pretranslate-approve-all i18n-download i18n-regenerate-fonts i18n-stats i18n-install-font i18n-download-translations i18n-download-glossary i18n-upload-glossary docker-whl docker-demoserver docker-devserver docker-envlist
 
 
 help:
@@ -33,7 +33,6 @@ help:
 	@echo "test: run tests quickly with the default Python"
 	@echo "test-all: run tests on every Python version with Tox"
 	@echo "test-with-postgres: run tests quickly with a temporary postgresql backend"
-	@echo "test-namespaced-packages: verify that we haven't fetched anything namespaced into kolibri/dist"
 	@echo "coverage: run tests, recording and printing out Python code coverage"
 	@echo "docs: generate developer documentation"
 	@echo "start-foreground-with-postgres: run Kolibri in foreground mode with a temporary postgresql backend"
@@ -152,30 +151,21 @@ release:
 	@read __
 	twine upload -s dist/*
 
-test-namespaced-packages:
-	# This expression checks that everything in kolibri/dist has an __init__.py
-	# To prevent namespaced packages from suddenly showing up
-	# https://github.com/learningequality/kolibri/pull/2972
-	! find kolibri/dist -mindepth 1 -maxdepth 1 -type d -not -name __pycache__ -not -name cext -not -name py2only -not -name *dist-info -exec ls {}/__init__.py \; 2>&1 | grep  "No such file"
-
 clean-staticdeps:
 	rm -rf kolibri/dist/* || true # remove everything
 	git checkout -- kolibri/dist # restore __init__.py
 
 staticdeps: clean-staticdeps
-	test "${SKIP_PY_CHECK}" = "1" || python2 --version 2>&1 | grep -q 2.7 || ( echo "Only intended to run on Python 2.7" && exit 1 )
-	pip2 install -t kolibri/dist -r "requirements.txt"
+	test "${SKIP_PY_CHECK}" = "1" || python --version 2>&1 | grep -q 3.6 || ( echo "Only intended to run on Python 3.6" && exit 1 )
+	pip install -t kolibri/dist -r "requirements.txt"
 	rm -rf kolibri/dist/*.egg-info
 	rm -r kolibri/dist/man kolibri/dist/bin || true # remove the two folders introduced by pip 10
-	python2 build_tools/py2only.py # move `future` and `futures` packages to `kolibri/dist/py2only`
-	make test-namespaced-packages
 
 staticdeps-cext:
 	rm -rf kolibri/dist/cext || true # remove everything
 	python build_tools/install_cexts.py --file "requirements/cext.txt" # pip install c extensions
 	pip install -t kolibri/dist/cext -r "requirements/cext_noarch.txt" --no-deps
 	rm -rf kolibri/dist/*.egg-info
-	make test-namespaced-packages
 
 staticdeps-compileall:
 	bash -c 'python --version'
@@ -209,7 +199,7 @@ read-whl-file-version:
 	python ./build_tools/read_whl_version.py ${whlfile} > kolibri/VERSION
 
 pex:
-	ls dist/*.whl | while read whlfile; do $(MAKE) read-whl-file-version whlfile=$$whlfile; pex $$whlfile --disable-cache -o dist/kolibri-`cat kolibri/VERSION | sed 's/+/_/g'`.pex -m kolibri --python-shebang=/usr/bin/python; done
+	ls dist/*.whl | while read whlfile; do $(MAKE) read-whl-file-version whlfile=$$whlfile; pex $$whlfile --disable-cache -o dist/kolibri-`cat kolibri/VERSION | sed 's/+/_/g'`.pex -m kolibri --python-shebang=/usr/bin/python3; done
 
 i18n-extract-backend:
 	cd kolibri && python -m kolibri manage makemessages -- -l en --ignore 'node_modules/*' --ignore 'kolibri/dist/*'

build_tools/install_cexts.py

@@ -2,7 +2,8 @@
 This module defines functions to install c extensions for all the platforms into
 Kolibri.
 
-It is required to have pip version greater than 19.3.1 to run this script.
+See requirements/build.txt for the list of requirements that must be installed for this
+script to run.
 Usage:
 > python build_tools/install_cexts.py --file "requirements/cext.txt" --cache-path "/cext_cache"
 
@@ -170,8 +171,6 @@ def parse_package_page(files, pk_version, index_url, cache_path):
         * not the version specified in requirements.txt
         * not python versions that kolibri does not support
         * not macosx
-        * not win_x64 with python 3.8
-        * not win32 with python 3.8
     """
 
     result = []
@@ -191,13 +190,10 @@ def parse_package_page(files, pk_version, index_url, cache_path):
 
         if package_version != pk_version:
             continue
-        if python_version != "27" and python_version not in supported_python3_versions:
+        if python_version not in supported_python3_versions:
             continue
         if "macosx" in platform:
             continue
-        if "win_amd64" in platform or "win32" in platform and python_version == "27":
-            # Don't install win_amd64 or win32 with python 2.7
-            continue
 
         info = {
             "platform": platform,

docker/build_whl.dockerfile

@@ -10,7 +10,7 @@ RUN apt-get update && \
     gettext \
     git \
     git-lfs \
-    python2.7 \
+    python3.6 \
     python-pip \
     python-sphinx
 

docs/getting_started.rst

@@ -62,7 +62,7 @@ Python and Pip
 
 To develop on Kolibri, you'll need:
 
-* Python 3.4+ or Python 2.7+ (Kolibri doesn't currently support Python 3.11.0 or higher)
+* Python 3.6+ (Kolibri doesn't currently support Python 3.12.0 or higher)
 * `pip <https://pypi.python.org/pypi/pip>`__
 
 Managing Python installations can be quite tricky. We *highly* recommend using `pyenv <https://github.com/pyenv/pyenv>`__ or if you are more comfortable using a package manager, then package managers like `Homebrew <http://brew.sh/>`__ on Mac or ``apt`` on Debian for this.

docs/stack.rst

@@ -10,7 +10,7 @@ Note that since Kolibri is still in development, the APIs are subject to change,
 Server
 ------
 
-The server is a `Django <https://www.djangoproject.com/>`__ application, and contains only pure-Python (2.7+) dependencies at run-time. It is responsible for:
+The server is a `Django <https://www.djangoproject.com/>`__ application, and contains only pure-Python (3.6+) dependencies at run-time. It is responsible for:
 
 - Interfacing with the database (either `SQLite <https://www.sqlite.org/index.html>`__ or `PostgreSQL <https://www.postgresql.org/>`__)
 - Authentication and permission middleware

kolibri/__init__.py

@@ -3,10 +3,6 @@
 This module is imported in setup.py, so you cannot for instance
 import a dependency.
 """
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
 from kolibri.utils import env
 from kolibri.utils.version import get_version
 

kolibri/__main__.py

@@ -1,7 +1,3 @@
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
 import sys
 
 if __name__ == "__main__":

kolibri/core/__init__.py

@@ -2,8 +2,4 @@
 enters the docs)
 
 """
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
 default_app_config = "kolibri.core.apps.KolibriCoreConfig"